But the church I like to visit in Paris, especially on Sunday mornings, is St. Sulpice — to enjoy its magnificent pipe organ, arguably the greatest in Europe. For organ lovers, a visit here is a pilgrimage. Before electricity, it took three men, working out on these 18th-century Stairmasters, to fill the bellows, which powered the organ. St. Sulpice has a rich history with a line of 12 world-class organists going back over 300 years. This sacred music continues to fill the spiritual sails of St. Sulpice as it has for centuries.